Hi, I am trying to solve equations for movement time and I cannot seem to crack it. The equation being MT=a+b(ID). A is equal to y intercept, b=the...

Hi,

I am trying to solve equations for movement time and I cannot seem to crack it. The equation being MT=a+b(ID). A is equal to y intercept, b=the slope, and ID (index of difficulty) = [Log2(2A/W)]. Would you please be able to walk me through any example on how I solve for each of these? Thanks